On Thu, Aug 24, 2023 at 02:39 AM, Daniel Walter wrote:
Recommendation is not to switch inductors while transmitting. Really pretty easy to peak up noise or signal on Rx, then just use Cin & Cout to fine tune. Rarely do you need to change inductor, but if you do, turn off Tx during switching.?
Good advice.
Unless you know how the switch works then this advice should precedence.
But just one small note, it can depend upon the switch type.
Switches can be break and then make (potentially leaving an open circuit before the switch has made)
or can be the opposite (make before break)
Break before make or make before break.
It can make a difference to expected operation and is often overlooked when purchasing
a simple switch in other circuits too.
Now then, don't get me started about variable caps.
Linear wavelength types and linear capacitance types, mostly forgotten knowledge these days ;-)
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- 73 de Andy -
